(19)
(11) EP 0 217 641 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
09.12.1987 Bulletin 1987/50

(43) Date of publication A2:
08.04.1987 Bulletin 1987/15

(21) Application number: 86307387

(22) Date of filing: 25.09.1986
(84) Designated Contracting States:
CH DE LI

(30) Priority: 27.09.1985 JP 21526585
14.10.1985 JP 22932985
24.06.1986 JP 14766786

(71) Applicants:
  • SANYO ELECTRIC CO., LTD.
     ()
  • Tottori Sanyo Electric Co., Ltd.
     ()

(72) Inventors:
  • Narita, Kenichi
     ()
  • Nakanishi, Shoji
     ()

   


(54) Liquid crystal display device


(57) A chiral nematic type liquid crystal display device in which the twist angle of a torsional structure of a liquid crystal layer is as large as 180° to 360° and the birefringence of liquid crystal molecules is utilized. This liquid crystal display device is characterized in that: a liquid crystal layer (2) is disposed between opposed substrates (1) and orientation films (12) formed of straight chain polymer having fluoro-alkyl side chain CnHmF2n+1-m (n being a natural number and m being a natural number of 0 or 2n or less) are provided on the respective inner surfaces of said substrates facing the liquid crystal layer.







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